Hello, can someone explain me the difference between this two type of PSU suppliers? I need to connect a second PSU to my mining rig and I can't choose tnx


https://ae01.alicdn.com/kf/HTB1BHg_XfxNTKJjy0Fjq6x6yVXaM.jpg

https://ae01.alicdn.com/kf/HTB1m0dASVXXXXX5apXXq6xXFXXXL.jpg